[PATCH] Remove some restrictions on where linebreaks can be in a pfa font.

Now FontForge can still parse them. for a more detailed explanation, go
see "Re: [Fontforge-devel] stuck in infinite loop", 2012August22
Found one more font affected by an infinite loop.

See dev-list "Re: [Fontforge-devel] stuck in infinite loop", 2013jan17
Change gdraw/hotkeys.c gcalloc() to calloc().

Dave also asked to re-insert Author comments. Done.
Merge remote-tracking branch 'upstream/master'
Merge pull request #238 from JoesCat/master

mainly ... Re: [Fontforge-devel] stuck in infinite loop